Home/CVE/An Improper Check for Unusual or Exceptional Conditions vulnerability exists in Schneider Electric's Modicon M221 produc
CVE

CVE-2018-7789

An Improper Check for Unusual or Exceptional Conditions vulnerability exists in Schneider Electric's Modicon M221 produc

An Improper Check for Unusual or Exceptional Conditions vulnerability exists in Schneider Electric's Modicon M221 product (all references, all versions prior to firmware V1.6.2.0). The vulnerability allows unauthorized users to remotely reboot Modicon M221 using crafted programing protocol frames.

HIGH · CVSS 7.5 EPSS 0.00792
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-754Improper Check for Unusual or Exceptional Conditions
▤

Affected Products & Versions

1
schneider-electric modicon m221 firmware< 1.6.2.0
▣

Scoring & Timeline

7.5
HIGH · CVSS v3.1 · cybersecurity@se.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD29 Aug 2018 · 08:29 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
⚑

Vendor Advisories

1
cisa-csafcisa-csaf-csaf_files-OT-white-2018-icsa-18-240-02
🔗

References & Sources

3
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://www.securityfocus.com/bid/105171Third Party AdvisoryVDB Entry
https://ics-cert.us-cert.gov/advisories/ICSA-18-240-02MitigationThird Party AdvisoryUS Government Resource
https://www.schneider-electric.com/en/download/document/SEVD-2018-233-01/MitigationVendor Advisory
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